How dare we wax holy about "their" culture of violence while pretending to be oblivious of our own?
Either he colluded with the practice or was oblivious to the point of negligence.
Your government has been oblivious to the grave ecological dangers faced by your country.
mid-15c., from Latin obliviosus "forgetful, that easily forgets; producing forgetfulness," from oblivion (see oblivion). Meaning "unaware, unconscious (of something)" is from 1862, formerly regarded as erroneous, this is now the general meaning and the word has lost its original sense of "no longer aware or mindful." Properly should be used with to, not of. Related: Obliviously; obliviousness.